chore(deps): update axum-tracing-opentelemetry requirement in /relay

Updates the requirements on [axum-tracing-opentelemetry](https://github.com/davidB/tracing-opentelemetry-instrumentation-sdk) to permit the latest version.
- [Release notes](https://github.com/davidB/tracing-opentelemetry-instrumentation-sdk/releases)
- [Changelog](https://github.com/davidB/tracing-opentelemetry-instrumentation-sdk/blob/main/CHANGELOG.md)
- [Commits](davidB/tracing-opentelemetry-instrumentation-sdk@axum-tracing-opentelemetry-v0.28.0...axum-tracing-opentelemetry-v0.30.1)

---
updated-dependencies:
- dependency-name: axum-tracing-opentelemetry
  dependency-version: 0.30.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

relay/Cargo.toml

@@ -25,7 +25,7 @@ tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }
 utoipa = { version = "5.3.1", features = ["axum_extras", "uuid", "chrono"] }
 utoipa-axum = "0.2.0"
 time = { version = "0.3.36", features = ["serde"] }
-axum-tracing-opentelemetry = "0.28.0"
+axum-tracing-opentelemetry = "0.30.1"
 init-tracing-opentelemetry = { version = "0.28.0", features = [
   "otlp",
   "tracing_subscriber_ext",